| Grefrath to Pontinia | 755.98 mi (1,216.63 km) |
| Grefrath to Porcari | 554.60 mi (892.55 km) |
| Grefrath to Porcia | 468.37 mi (753.76 km) |
| Grefrath to Pordenone | 470.23 mi (756.77 km) |
| Grefrath to Portici | 820.45 mi (1,320.39 km) |
| Grefrath to Porto Empedocle | 1,031.98 mi (1,660.81 km) |
| Grefrath to Porto Recanati | 643.98 mi (1,036.38 km) |
| Grefrath to Porto Sant'Elpidio | 656.04 mi (1,055.80 km) |
| Grefrath to Porto Tolle | 519.81 mi (836.55 km) |
| Grefrath to Porto Torres | 732.05 mi (1,178.12 km) |
| Grefrath to Portoferraio | 617.42 mi (993.64 km) |
| Grefrath to Portogruaro | 484.73 mi (780.10 km) |
| Grefrath to Portomaggiore | 523.01 mi (841.70 km) |
| Grefrath to Potenza | 866.22 mi (1,394.04 km) |
| Grefrath to Potenza Picena | 646.74 mi (1,040.83 km) |
